package com.itheima.service.impl;

import com.alibaba.dubbo.config.annotation.Service;
import com.itheima.constant.MessageConstant;
import com.itheima.dao.MemberDao;
import com.itheima.dao.OrderDao;
import com.itheima.dao.OrderSettingDao;
import com.itheima.entity.Result;
import com.itheima.pojo.Member;
import com.itheima.pojo.Order;
import com.itheima.pojo.OrderSetting;
import com.itheima.service.OrderService;
import com.itheima.utils.DateUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.transaction.annotation.Transactional;

import java.util.Date;
import java.util.List;
import java.util.Map;

@Transactional
@Service(interfaceClass = OrderService.class)

public class OrderServiceImpl implements OrderService  {

    @Autowired
    private OrderSettingDao orderSettingDao;
    @Autowired
    private MemberDao memberDao;
    @Autowired
    private OrderDao orderDao;
    @Override
    public Result order(Map map) throws Exception {
        //1.检查用户所选日期是否能预约
        String orderDate = (String) map.get("orderDate");
        OrderSetting orderSetting=orderSettingDao.findByOrderDate(DateUtils.parseString2Date(orderDate));
        if (orderSetting==null){
            return new Result(false, MessageConstant.SELECTED_DATE_CANNOT_ORDER);
        }
        //2.检查可预约人数是否可预约
        int number = orderSetting.getNumber();//可预约人数
        int reservations = orderSetting.getReservations();//已预约人数
        if (reservations>=number){
            return new Result(false,MessageConstant.ORDER_FULL);
        }

        //3.检查用户是否重复预约
        String telephone = (String) map.get("telephone");//获取用户页面输入的手机号，判断是否为同一个用户
        Member member = memberDao.findByTelephone(telephone);
        //4.检查用户是否为会员，如果是，直接预约，不是，自动注册为会员在预约
        if (member!=null){
            //判断是否重复预约
            Integer id = member.getId();
            Date order_Date = DateUtils.parseString2Date(orderDate);
            String setmealId = (String) map.get("setmealId");
            Order order = new Order(id, order_Date, Integer.parseInt(setmealId));
            //根据条件查询是否存在预约
            List<Order> list = orderDao.findByCondition(order);
            if (list !=null && list.size()>0){
                //说明数据库中有预约数据，在重复预约
                return new Result(false,MessageConstant.HAS_ORDERED);
            }

        }else {

            //说明不是会员
            member  = new Member();
            member.setPhoneNumber(telephone);
            member.setName((String) map.get("name"));
            member.setIdCard((String) map.get("idCard"));
            member.setSex((String) map.get("sex"));
            member.setRegTime(new Date());
            memberDao.add(member);
        }

        //5.预约成功，修改可预约人数

        Order order = new Order();
        order.setMemberId(member.getId());
        order.setOrderDate(DateUtils.parseString2Date(orderDate));
        order.setOrderType((String) map.get("orderType"));
        order.setOrderStatus(Order.ORDERSTATUS_NO);
        order.setSetmealId(Integer.parseInt((String) map.get("setmealId")) );
        orderDao.add(order);

        orderSetting.setReservations(orderSetting.getReservations()+1);
        orderSettingDao.editReservationsByOrderDate(orderSetting);
        return new Result(true,MessageConstant.ORDER_SUCCESS,order.getId());
    }

    @Override
    public Map findById(Integer id) throws Exception{
        Map map = orderDao.findById4Detail(id);
        if (map !=null){
            Date orderDate = (Date) map.get("orderDate");
            map.put("orderDate",DateUtils.parseDate2String(orderDate));
        }
        return map;
    }
}
